Battery cell, battery device, and electric device

Abstract

The application relates to a battery monomer, a battery device and an electric equipment. The battery monomer comprises a shell with a first wall; an electrode assembly arranged in the interior of the shell, the electrode assembly comprising a main body part and a tab extending from the main body part; an insulating piece arranged in the interior of the shell, the insulating piece being arranged between the main body part and the first wall along the thickness direction of the first wall; and a support arranged between the insulating piece and the main body part along the thickness direction of the first wall, a part of the tab being arranged between the support and the insulating piece, and the support being in sliding connection with the insulating piece along the length direction of the first wall. The support and the insulating piece are in sliding connection along the length direction of the first wall, and the support is positioned when the sliding connection between the support and the insulating piece is realized, so that the support does not need to be positioned again in the assembling process, and the assembling process is simplified.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery cell, battery device, and electrical equipment. Background Technology

[0002] A battery cell typically includes a casing and an electrode assembly disposed inside the casing. The electrode assembly has tabs formed on it, which are electrically connected to electrode terminals on the casing to enable the battery cell's power output and input. After the tabs and electrode terminals are electrically connected, problems such as cracking and redundant insertion can easily occur during the battery cell's production, transportation, and cyclic use. Therefore, a support structure is usually installed inside the battery cell to improve the stability of the electrical connection between the tabs and electrode terminals.

[0003] However, the current assembly process of the support structure is relatively complex, which affects the overall production efficiency of the battery cells. Utility Model Content

[0004] Therefore, it is necessary to address the issue that the current assembly process of the support structure is relatively complex, which affects the overall production efficiency of the battery cell, and to provide a battery cell, battery device, and electrical equipment.

[0005] In a first aspect, this application provides a battery cell, including a casing, an electrode assembly, an insulating member, and a support. The casing has a first wall; the electrode assembly is disposed inside the casing, and the electrode assembly includes a main body and a tab extending from the main body; the insulating member is disposed inside the casing, and along the thickness direction of the first wall, the insulating member is disposed between the main body and the first wall; the support is disposed along the thickness direction of the first wall between the insulating member and the main body, a portion of the tab is disposed between the support and the insulating member, and the support is slidably connected to the insulating member along the length direction of the first wall.

[0006] With the above structure, the bracket and the insulating component are slidably connected along the length of the first wall. When the bracket and the insulating component are slidably connected, the bracket can be positioned, thus eliminating the need for secondary positioning of the bracket during assembly and simplifying the assembly process.

[0007] In some embodiments, a slide rail is provided on one of the bracket and the insulating member, and a slider is provided on the other, with the slide rail and the slider slidingly engaging along the length of the first wall.

[0008] In this way, the separation and connection between the bracket and the insulating component can be achieved through the sliding engagement between the slide rail and the slider. At the same time, when the slide rail and the slider are slidably connected, the bracket can be positioned on the insulating component, eliminating the need for secondary positioning of the bracket during assembly and simplifying the assembly process.

[0009] In some embodiments, the slide rail includes a track body and a limiting part. The track body is fixed to one of the bracket and the insulating member. The limiting part extends outward from the track body along the width direction of the first wall. A limiting groove is formed on the other of the insulating member and the bracket. The limiting groove is located on opposite sides of the slider along the width direction of the first wall. The limiting groove is used to accommodate the limiting part and to limit the limiting part along the thickness direction of the first wall.

[0010] With the above structure, while achieving a sliding fit between the bracket and the insulating component along the length of the first wall, the limiting part can be limited to the limiting groove along the thickness direction of the first wall. That is, the bracket is limited along the thickness direction of the first wall, so that the bracket can be more accurately assembled and connected with the insulating component.

[0011] In some embodiments, the slide rail is disposed on the insulating member, and the insulating member is further provided with a first connecting portion; the slider extends along the length direction of the first wall and is disposed on the bracket, and the bracket is further provided with a second connecting portion that is detachably connected to the first connecting portion.

[0012] With the above structure, after the bracket and the insulating component are slidably connected in place, they can be connected and fixed through the first connecting part and the second connecting part, making the connection between the bracket and the insulating component more stable.

[0013] In some embodiments, the bracket has a pre-installation position and an installation position. In the pre-installation position, the slide rail and the slider are slidably engaged, and the first connecting part and the second connecting part are separated. In the installation position, the slide rail and the slider are slidably engaged, and the first connecting part and the second connecting part are connected.

[0014] In this way, by switching the bracket between the pre-installation position and the installation position, pre-processing such as welding between the electrode tab and the adapter plate or between the adapter plate and the first wall can be achieved, improving operational efficiency. After the pre-processing is completed, the bracket and the insulating component are stably connected in the installation position.

[0015] In some embodiments, the first connecting portion is configured as a snap fastener, the second connecting portion is configured as a slot, and the opening of the slot is disposed away from the slider along the length direction of the first wall; wherein the snap fastener is configured to be able to snap into or disengage from the slot along the length direction of the first wall.

[0016] The above structure enables a sliding fit between the support and the insulating component, and also allows for quick connection and disassembly of the support and the insulating component, facilitating assembly.

[0017] In some embodiments, the buckle includes a first sub-buckle and a second sub-buckle spaced apart along the width direction of the first wall. Both the first sub-buckle and the second sub-buckle include a fixed end connected to the insulating member and a free end disposed away from the fixed end. When the bracket is in the installation position, the first sub-buckle and the second sub-buckle are located in corresponding slots and are subjected to abutting force as the free ends approach each other.

[0018] In this way, by setting the first and second sub-buckles, the buckle can be more stably engaged in the corresponding slot.

[0019] In some embodiments, the free ends of the first and second sub-buckles each have protrusions that are opposite to each other, and the groove wall of the slot extends inward to form a limiting step; when the bracket is in the installation position, the limiting step limits the protrusions along the thickness direction of the first wall.

[0020] With the above structure, when the bracket is in the installation position, the limiting step can limit the bracket along the thickness direction of the first wall, making the assembly between the bracket and the insulating component more stable.

[0021] In some embodiments, the electrode tab includes a first electrode tab and a second electrode tab, and the bracket includes two brackets corresponding to the first electrode tab and the second electrode tab respectively; wherein, each bracket is provided with a corresponding slider and a second connecting part, and the second connecting parts of the two brackets are arranged opposite to each other along the length direction of the first wall.

[0022] With the above structure, the two brackets slide and engage with the corresponding slide rails respectively, and slide closer to each other along the length of the first wall, so that the second connecting parts on the two brackets are connected to the corresponding first connecting parts respectively, thus realizing the installation of the two brackets and the insulating parts.

[0023] In some embodiments, the insulating member is provided with two sets of slide rails and a first connecting part, each set of slide rails and the first connecting part corresponding to a slider and a second connecting part on a bracket; wherein, the insulating member is provided with an adapter plate receiving position, each set of slide rails and the first connecting part are arranged on opposite sides of the corresponding adapter plate receiving position along the length direction of the first wall.

[0024] In this way, each set of slide rails and the first connecting part can better avoid the corresponding adapter piece, and the setting of the adapter piece is not affected while achieving a sliding connection with the bracket.

[0025] In some embodiments, the support has multiple flow holes extending through the thickness of the first wall. This allows the electrolyte to flow in more smoothly and quickly through the flow holes, effectively improving the injection efficiency.

[0026] Secondly, this application also provides a battery device, including the battery cell as described above.

[0027] Thirdly, this application also provides an electrical device, including the battery device described above.

[0028] The aforementioned battery cell, battery device, and electrical equipment are slidably connected between the bracket and the insulating component along the length of the first wall. When the bracket and the insulating component are slidably connected, the bracket can be positioned, thus eliminating the need for secondary positioning of the bracket during assembly and simplifying the assembly process. Attached Figure Description

[0029] Figure 1 This is a structural schematic diagram of a vehicle according to one or more embodiments.

[0030] Figure 2 This is an exploded structural diagram of a battery device according to one or more embodiments.

[0031] Figure 3 This is an exploded structural diagram of a battery cell according to one or more embodiments.

[0032] Figure 4 This is an exploded structural diagram of a battery cell with a support according to one or more embodiments.

[0033] Figure 5 This is a cross-sectional view of a battery cell according to one or more embodiments.

[0034] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle.

[0035] Figure 7 This is a partial assembly diagram of the support and insulating components in a battery cell according to the first embodiment.

[0036] Figure 8 This is a partial assembly diagram of the support and insulating components in a battery cell according to the second embodiment.

[0037] Figure 9 This is a side view of the support in a battery cell according to one or more embodiments.

[0038] Figure 10 This is a partial assembly diagram of the support and insulation components in a battery cell according to the third embodiment.

[0039] Figure 11 for Figure 10 A magnified view of a section at point C.

[0040] Figure 12 for Figure 8 A magnified view of a section at point B in the middle.

[0041] Figure 13This is a top view of the support in a battery cell according to one or more embodiments.

[0042] Figure 14 This is a schematic diagram of the assembly of electrode components and support in a battery cell according to one or more embodiments.

[0043] Explanation of reference numerals in the attached drawings: 1000, vehicle; 100, battery pack; 200, controller; 300, motor; 10, housing; 20, battery cell; 11, upper housing; 12, lower housing; 21, top cover; 22, casing; 23, electrode assembly; 24, insulating component; 25, bracket; 26, adapter plate receiving position; 211, first electrode terminal; 212, second electrode terminal; 213, liquid injection hole; 231, main body. Part; 232, tab; 241, slide rail; 242, rail body; 243, limiting part; 244, first connecting part; 245, first buckle; 246, second buckle; 247, fixed end; 248, free end; 249, protrusion; 251, slider; 252, limiting groove; 253, second connecting part; 254, limiting step; 255, flow hole; a, thickness direction; b, length direction; c, width direction. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0045] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0046] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0049] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0050] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as other fields. With the continuous expansion of the application areas of battery devices, the market demand is also constantly increasing.

[0051] A battery device consists of one or more battery cells. For each battery device, the multiple battery cells that make up it can be connected in series, in parallel, or in a mixed configuration. Among them, a mixed configuration means that multiple battery cells are connected in both series and parallel.

[0052] A battery cell is the smallest unit that makes up a battery device. A battery cell typically includes a casing and an electrode assembly. The casing may include a top cover and a housing, which together enclose a closed cavity in which the electrode assembly can be placed. Thus, the casing protects the electrode assembly.

[0053] Electrode components are the parts in a battery cell where electrochemical reactions occur, and typically include positive electrode plates, negative electrode plates, and separators that are stacked or wound together.

[0054] For an electrode assembly, the portion of the positive or negative electrode plate coated with active material constitutes the main body of the electrode assembly, while the portion of the positive or negative electrode plate not coated with active material constitutes the tab. When the electrode assembly is placed in the receiving cavity, the tab can be electrically connected to the electrode terminals on the top cover via an adapter to realize the output or input of power from the battery cell.

[0055] Once the tabs and electrode terminals are electrically connected, problems such as cracking and redundant insertion can easily occur with the tabs during production, transportation, and cyclic use of the battery cell. Therefore, a support structure is usually installed inside the battery cell to improve the stability of the electrical connection between the tabs and electrode terminals.

[0056] However, during the current assembly process, the support structure needs to be moved to the workbench first, its position is detected, and it is then repositioned to ensure that it can be accurately gripped and installed onto the specific position on the battery cell.

[0057] The assembly process described above is not only complex and affects overall production efficiency, but also requires additional detection and secondary positioning devices, and the equipment occupies a large space.

[0058] Based on the above considerations, in order to solve the problem that the current bracket structure has a relatively complex assembly process, which affects the overall production efficiency of the battery cell, one or more embodiments of this application provide a battery cell in which the bracket and the insulating component are slidably connected along the length direction of the first wall. When the bracket and the insulating component are slidably connected, the bracket can be positioned, thus eliminating the need for secondary positioning of the bracket during the assembly process and simplifying the assembly process.

[0059] It should be noted that the battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0060] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells. As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0061] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0062] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0063] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0064] The battery devices disclosed in this application can be used, but are not limited to, in electrical equipment such as vehicles, ships, or aircraft.

[0065] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0066] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device according to an embodiment of this application.

[0067] Please refer to Figure 1The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0068] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0069] Please refer to Figure 2 The battery device 100 includes a housing 10 and a battery cell 20, with the battery cell 20 housed within the housing 10. The housing 10 provides a space for the battery cell 20 and can have various structures. In some embodiments, the housing 10 may include an upper housing 11 and a lower housing 12, which overlap each other, collectively defining a space for accommodating the battery cell 20. The lower housing 12 may be a hollow structure with one open end, and the upper housing 11 may be a plate-like structure, covering the open side of the lower housing 12 so that the upper housing 11 and lower housing 12 together define the space. Alternatively, both the upper housing 11 and lower housing 12 may be hollow structures with one open side, with the open side of the upper housing 11 covering the open side of the lower housing 12. Of course, the box 10 formed by the upper box 11 and the lower box 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0070] In the battery device 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 20 are connected in both series and parallel connections. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, the battery device 100 can also consist of multiple battery cells 20 first connected in series, parallel, or in a mixed configuration to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is also housed within the housing 10. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0071] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0072] Please refer to Figure 3 A battery cell 20 refers to the smallest unit that makes up a battery. A battery cell 20 typically includes a casing, electrode assembly 23, and other functional components. The casing includes a top cover 21 and a housing 22. The top cover 21 is a component that closes onto the opening of the housing 22 to isolate the internal environment of the battery cell 20 from the external environment. The shape of the top cover 21 can be adapted to the shape of the housing 22 to fit the housing 22. Functional components such as electrode terminals, also known as terminals, can be provided on the top cover 21. The electrode terminals can be used to electrically connect to the electrode assembly 23 for outputting or inputting electrical energy into the battery cell 20. In some embodiments, the top cover 21 may also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold. In some embodiments, an insulating member may also be provided inside the top cover 21. The insulating member can be used to isolate the electrical connection components within the housing 22 from the top cover 21 to reduce the risk of short circuits. Exemplarily, the insulating member can be made of plastic, rubber, etc.

[0073] The housing 22 is a component used to cooperate with the top cover 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the top cover 21 can be independent components. An opening can be provided on the housing 22, and the top cover 21 closes the opening to form the internal environment of the battery cell 20. Alternatively, the top cover 21 and the housing 22 can be integrated. Specifically, the top cover 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the top cover 21 closes the housing 22. The housing 22 can have various shapes and sizes, such as cuboid, cylindrical, or hexagonal prism. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23.

[0074] Electrode assembly 23 is the component in the battery cell 20 where electrochemical reactions occur. The casing 22 may contain one or more electrode assemblies 23. Electrode assembly 23 mainly consists of a positive electrode, a separator, and a negative electrode. Specifically, positive and negative active materials are coated onto the current collector to form the positive and negative electrode, respectively. The positive and negative electrode are wound or stacked, with the separator positioned between them, thus forming electrode assembly 23. The portions of the positive and negative electrode with active material constitute the main body of electrode assembly 23, while the portions without active material each constitute a tab. The positive and negative tabs may be located together at one end of the main body or at opposite ends. During charging and discharging, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0075] Please refer to the following: Figure 4 , Figure 5 as well as Figure 6 One embodiment of this application provides a battery cell 20, including a casing, an electrode assembly 23, an insulator 24, and a support 25. The casing has a first wall, and the electrode assembly 23 is disposed inside the casing. The electrode assembly 23 includes a main body portion 231 and a tab 232 extending from the main body portion 231. The insulator 24 is disposed inside the casing, along the thickness direction a of the first wall, between the main body portion 231 and the first wall. The support 25 is disposed along the thickness direction a of the first wall between the insulator 24 and the main body portion 231. A portion of the tab 232 is disposed between the support 25 and the insulator 24, and the support 25 is slidably connected to the insulator 24 along the length direction b of the first wall.

[0076] It should be noted that the outer shell refers to the structure that encloses and forms a cavity for accommodating the electrode assembly 23 and can protect the electrode assembly 23. The outer shell has a first wall, which can be a top cover 21. The outer shell also includes a housing 22, one end of which is open. The top cover 21 is sealed at the opening so that the top cover 21 and the housing 22 together enclose and form a sealed cavity.

[0077] The electrode assembly 23, the insulating component 24, and the bracket 25 are all located within the receiving cavity. The insulating component 24 is made of insulating material and may be, but is not limited to, a lower plastic material. The insulating component 24 is disposed on the inner surface of the top cover 21 and can provide good insulation between the electrode assembly 23 and the top cover 21.

[0078] The electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction actually takes place. It typically includes a main body 231 and a tab 232. The tab 232 is further divided into a positive tab and a negative tab. The positive tab and the negative tab are electrically connected to the electrode terminals on the top cover 21 to realize the input and output of the battery cell 20.

[0079] The bracket 25 is located between the insulating member 24 and the main body 231 along the thickness direction a of the first wall. The thickness direction a of the first wall can be set as the height direction of the battery cell 20.

[0080] It should be noted that during the transportation, transfer, or cyclic use of the battery cell 20, the electrode assembly 23 may shift position within the receiving cavity. To ensure a smooth connection between the tab 232 and the electrode terminal, the tab 232 is typically lengthened with a certain margin and is folded.

[0081] This raises the risk that the tab 232 may crack or become redundantly inserted into the electrode plate during transportation, transfer, or recycling. Therefore, the tab 232 needs to be supported and fixed by the bracket 25 to make its structure more stable.

[0082] Under this premise, the bracket 25 is disposed between the insulating member 24 and the main body 231 along the thickness direction a of the first wall, and the bracket 25 is slidably connected to the insulating member 24 along the length direction b of the first wall.

[0083] Thus, through the above structure, the bracket 25 and the insulating member 24 are slidably connected along the length direction b of the first wall. When the bracket 25 and the insulating member 24 are slidably connected, the bracket 25 can be positioned, so that the bracket 25 does not need to be repositioned during the assembly process, which simplifies the assembly process.

[0084] In addition, chamfers or rounded corners can be provided on the edge of the slide rail 241 so that the slider 251 can slide more smoothly with the slide rail 241.

[0085] like Figure 7 , Figure 8 as well as Figure 9 As shown, where, Figure 7 Both brackets 25 are mounted on the insulating component 24. Figure 8 Only one bracket 25 is installed. In some embodiments, a slide rail 241 is provided on one of the bracket 25 and the insulating member 24, and a slider 251 is provided on the other. The slide rail 241 and the slider 251 slide in cooperation along the length direction b of the first wall.

[0086] Specifically, the slide rail 241 can be mounted on the bracket 25, and the slider 251 can be mounted on the insulating member 24. Alternatively, the slide rail 241 can be mounted on the insulating member 24, and the slider 251 can be mounted on the bracket 25.

[0087] To facilitate assembly and connection, the slide rail 241 and the slider 251 are respectively disposed on the surfaces of the bracket 25 and the insulating member 24 facing each other. The slider 251 can be inserted into the slide rail 241 along the length direction b of the first wall and slide in the slide rail 241 along the length direction b of the first wall to realize the connection between the bracket 25 and the insulating member 24.

[0088] In this way, the separation and connection between the bracket 25 and the insulating component 24 can be achieved through the sliding engagement between the slide rail 241 and the slider 251. At the same time, when the slide rail 241 and the slider 251 are slidably connected, the bracket 25 can be positioned on the insulating component 24, eliminating the need for secondary positioning of the bracket 25 during assembly and simplifying the assembly process.

[0089] like Figure 9 , Figure 10 and Figure 11 As shown, where, Figure 10 Only one bracket 25 is installed on the insulating member 24. In some embodiments, the slide rail 241 includes a track body 242 and a limiting part 243. The track body 242 is fixed to one of the bracket 25 and the insulating member 24, and the limiting part 243 extends outward from the track body 242 along the width direction c of the first wall. A limiting groove 252 is formed on the other of the insulating member 24 and the bracket 25. The limiting groove 252 is located on opposite sides of the slider 251 along the width direction c of the first wall. The limiting groove 252 is used to accommodate the limiting part 243 and limits the limiting part 243 along the thickness direction a of the first wall.

[0090] Specifically, when the slide rail 241 is mounted on the bracket 25, the track body 242 is fixed to the bracket 25. When the slide rail 241 is mounted on the insulating member 24, the track body 242 is fixed to the insulating member 24. The limiting part 243 is formed on the track body 242 and extends outward from both sides of the track body 242 along the width direction c of the first wall.

[0091] Furthermore, when the slider 251 is disposed on the insulating member 24, a limiting groove 252 is formed on the insulating member 24. When the slider 251 is disposed on the bracket 25, a limiting groove 252 is formed on the bracket 25.

[0092] The limiting groove 252 is located on opposite sides of the slider 251 along the width direction c of the first wall. When the slider 251 slides with the track body 242, the limiting part 243 can be accommodated in the limiting groove 252 and the limiting part 243 is limited in the limiting groove 252 along the thickness direction a of the first wall.

[0093] Thus, through the above structure, while achieving the sliding fit between the bracket 25 and the insulating member 24 along the length direction b of the first wall, the limiting part 243 can be limited within the limiting groove 252 along the thickness direction a of the first wall. That is, the bracket 25 is limited along the thickness direction a of the first wall, so that the bracket 25 can be more accurately assembled and connected with the insulating member 24.

[0094] In some embodiments, the slide rail 241 is disposed on the insulating member 24, and the insulating member 24 is further provided with a first connecting portion 244. The slider 251 extends along the length direction b of the first wall and is disposed on the bracket 25, and the bracket 25 is further provided with a second connecting portion 253 that is detachably connected to the first connecting portion 244.

[0095] Specifically, the first connecting part 244 and the second connecting part 253 can be separated or connected to realize the separation and connection between the bracket 25 and the insulating member 24.

[0096] The slider 251 is extended along the length direction b of the first wall and disposed on the bracket 25, so that the slider 251 extends from one end of the bracket 25 to the other end along the length direction b of the first wall.

[0097] During assembly, the bracket 25 first slides along the length direction b of the first wall from one end of the slide rail 241 on the insulating component 24, and the slider 251 slides in the slide rail 241. Then, the bracket 25 continues to be pushed along the length direction b of the first wall, so that the second connecting part 253 connects with the first connecting part 244, thus completing the assembly connection between the bracket 25 and the insulating component 24.

[0098] With the above structure, after the bracket 25 and the insulating member 24 are slidably connected in place, they can be connected and fixed by the first connecting part 244 and the second connecting part 253, so that the connection between the bracket 25 and the insulating member 24 is more stable.

[0099] In some embodiments, the bracket 25 has a pre-installation position and an installation position. In the pre-installation position, the slide rail 241 and the slider 251 are slidably engaged, and the first connecting portion 244 and the second connecting portion 253 are separated. In the installation position, the slide rail 241 and the slider 251 are slidably engaged, and the first connecting portion 244 and the second connecting portion 253 are connected.

[0100] Specifically, when the bracket 25 is in the pre-installation position, the slider 251 is inserted into the slide rail 241 along the length direction b of the first wall, but the bracket 25 stops at one end of the insulating part 24 where the slide rail 241 is located. At this time, the first connecting part 244 and the second connecting part 253 are separated. At this time, it is convenient to perform pre-processing such as welding between the electrode tab 232 and the adapter piece, and between the adapter piece and the top cover 21.

[0101] After the pre-processing such as welding is completed, the bracket 25 is pushed along the length direction b of the first wall to slide toward the second end of the insulating member 24. When the bracket 25 reaches the installation position, the first connecting part 244 is connected to the second connecting part 253. At this time, the assembly between the bracket 25 and the insulating member 24 is completed.

[0102] Thus, by switching the bracket 25 between the pre-installation position and the installation position, pre-processing such as welding between the tab 232 and the adapter piece or between the adapter piece and the first wall can be achieved, improving operational efficiency. After the pre-processing is completed, the bracket 25 and the insulating part 24 are stably connected in the installation position.

[0103] In some embodiments, the first connecting portion 244 is configured as a snap-fit, and the second connecting portion 253 is configured as a slot, with the opening of the slot disposed away from the slider 251 along the length direction b of the first wall. The snap-fit ​​is configured to engage with or disengage from the slot along the length direction b of the first wall.

[0104] Specifically, the first connecting part 244 can be configured as a buckle, and the second connecting part 253 can be configured as a slot. The opening of the slot is positioned away from the slider 251 along the length direction b of the first wall.

[0105] The bracket 25 slides relative to the insulating member 24 along the length direction b of the first wall. When the bracket 25 slides from the pre-installation position to the installation position, the latch engages into the slot along the length direction b of the first wall, thus achieving connection. Conversely, when the bracket 25 slides from the installation position to the pre-installation position, the latch disengages from the slot along the length direction b of the first wall, thus achieving separation.

[0106] Therefore, through the above structure, while achieving a sliding fit between the bracket 25 and the insulating component 24, it is also possible to achieve quick connection and quick disassembly between the bracket 25 and the insulating component 24, which facilitates assembly.

[0107] Please refer to the following: Figure 8 , Figure 12 as well as Figure 13In some embodiments, the latch includes a first sub-latch 245 and a second sub-latch 246 spaced apart along the width direction c of the first wall. Both the first sub-latch 245 and the second sub-latch 246 include a fixed end 247 connected to the insulating member 24 and a free end 248 disposed away from the fixed end 247. When the bracket 25 is in the installation position, the first sub-latch 245 and the second sub-latch 246 are located in corresponding slots and are subjected to an abutting force from the free ends 248 approaching each other.

[0108] It should be noted that the number of buckles can be set according to actual needs. For example, two buckles can be set, and the two buckles are spaced apart along the width direction c of the first wall. The number and position of the buckles correspond one-to-one with the number of slots.

[0109] Each buckle includes a first sub-buckle 245 and a second sub-buckle 246 spaced apart along the width direction c of the first wall. The first sub-buckle 245 and the second sub-buckle 246 each have a fixed end 247 and a free end 248. The fixed end 247 is fixedly connected to the insulating member 24, and the free end 248 extends in a direction away from the insulating member 24.

[0110] Furthermore, the first sub-buckle 245 and the second sub-buckle 246 are spaced apart along the width direction c of the first wall. When the buckles are engaged in the corresponding slots, the side walls of the slots press against the first sub-buckle 245 and the second sub-buckle 246, causing the free ends 248 of the first sub-buckle 245 and the second sub-buckle 246 to tend to move closer to each other. At the same time, the free ends 248 of the first sub-buckle 245 and the second sub-buckle 246 also exert a resisting force against the slot walls.

[0111] In this way, by setting the first sub-buckle 245 and the second sub-buckle 246, the buckle can be more stably engaged in the corresponding slot.

[0112] In some embodiments, the free ends 248 of the first sub-buckle 245 and the second sub-buckle 246 each have mutually opposing protrusions 249, and the groove wall of the slot extends inward to form a limiting step 254. When the bracket 25 is in the installation position, the limiting step 254 limits the protrusions 249 along the thickness direction a of the first wall.

[0113] Specifically, the free end 248 of the first sub-button 245 protrudes in a direction away from the second sub-button 246 to form a protrusion 249, and the free end 248 of the second sub-button 246 protrudes in a direction away from the first sub-button 245 to form a protrusion 249.

[0114] Meanwhile, the groove wall of the slot extends inward to form a limiting step 254. When the bracket 25 is in the installation position, the first sub-buckle 245 and the second sub-buckle 246 are located in the corresponding slots, and the protrusions 249 of the first sub-buckle 245 and the second sub-buckle 246 overlap on the limiting step 254. In this way, the limiting step 254 can limit the protrusions 249 along the thickness direction a of the first wall.

[0115] With the above structure, when the bracket 25 is in the installation position, the limiting step 254 can limit the bracket 25 along the thickness direction a of the first wall, making the assembly between the bracket 25 and the insulating component 24 more stable.

[0116] like Figure 3 and Figure 14 As shown, in some embodiments, the electrode tab 232 includes a first electrode tab and a second electrode tab, and the bracket 25 includes two tabs corresponding to the first electrode tab and the second electrode tab, respectively. Each bracket 25 is provided with a corresponding slider 251 and a second connecting portion 253, and the second connecting portions 253 of the two brackets 25 are arranged opposite to each other along the length direction b of the first wall.

[0117] Specifically, the top cover 21 has a first electrode terminal 211 and a second electrode terminal 212 spaced apart from each other along the length b of the first wall. The first electrode terminal 211 can be configured as a positive electrode terminal, and the second electrode terminal 212 can be configured as a negative electrode terminal. The first electrode tab is a positive electrode tab, and the second electrode tab is a negative electrode tab. The positive electrode tab is electrically connected to the positive electrode terminal, and the negative electrode tab is electrically connected to the negative electrode terminal.

[0118] One of the two supports 25 is disposed between the positive electrode tab and the positive electrode terminal along the thickness direction a of the first wall, and the other is disposed between the negative electrode tab and the negative electrode terminal along the thickness direction a of the first wall. In this way, one support 25 can support and fix the positive electrode tab, and the other support 25 can support and fix the negative electrode tab.

[0119] Furthermore, the second connecting portions 253 of the two brackets 25 are arranged opposite each other along the length direction b of the first wall. In this way, the two brackets 25 can slide close to each other along the length direction b of the first wall, which facilitates installation and operation.

[0120] Thus, through the above structure, the two brackets 25 slide and engage with the corresponding slide rails 241 respectively, and slide closer to each other along the length direction b of the first wall, finally connecting the second connecting parts 253 on the two brackets 25 to the corresponding first connecting parts 244 respectively, thereby realizing the installation of the two brackets 25 and the insulating part 24.

[0121] In some embodiments, the insulating member 24 is provided with two sets of slide rails 241 and a first connecting portion 244, each set of slide rails 241 and the first connecting portion 244 corresponding to a slider 251 and a second connecting portion 253 on a bracket 25. The insulating member 24 is provided with an adapter plate receiving position 26, and each set of slide rails 241 and the first connecting portion 244 are disposed on opposite sides of the corresponding adapter plate receiving position 26 along the length direction b of the first wall.

[0122] Specifically, the adapter plate receiving position 26 can be configured as an opening so that the adapter plate can pass through the insulator 24 and connect between the tab 232 and the top cover 21.

[0123] Furthermore, two sets of first connecting portions 244 and slide rails 241 are provided on the insulating member 24, corresponding to the two brackets 25 respectively. The two sets of first connecting portions 244 are arranged close to each other along the length direction b of the first wall, that is, the two sets of first connecting portions 244 are located at the middle position of the first wall along the length direction b of the first wall. The two sets of slide rails 241 are arranged far apart from each other along the length direction b of the first wall, that is, the two sets of slide rails 241 are located at the edge position of the first wall along the length direction b of the first wall.

[0124] Thus, through the above structure, each set of slide rails 241 and the first connecting part 244 can better avoid the corresponding adapter piece, and the setting of the adapter piece is not affected while achieving sliding connection with the bracket 25.

[0125] like Figure 13 As shown, in some embodiments, the support 25 has a plurality of flow holes 255 extending through the thickness direction a of the first wall.

[0126] It should be noted that an injection hole 213 is usually provided through the first wall along its own thickness, through which electrolyte is injected into the interior of the battery cell 20.

[0127] After the battery cell 20 is assembled, the support 25 is positioned between the first wall and the electrode assembly 23 along the thickness direction a of the first wall. Thus, a flow-through hole 255 is formed in the support 25, providing a flow channel for the electrolyte during the electrolyte injection process. This allows the electrolyte to flow in more smoothly and quickly through the flow-through hole 255, effectively improving the electrolyte injection efficiency.

[0128] Based on the same concept as the battery cell 20 described above, this application also provides a battery device 100, including the battery cell 20 as described above.

[0129] Based on the same concept as the battery device 100 described above, this application also provides an electrical device including the battery device 100 as described above.

[0130] According to one or more embodiments, when this application is used, the insulating member 24 is first fixed to the inner surface of the top cover 21, and the slider 251 on the bracket 25 is slidably engaged with the corresponding slide rail 241 on the insulating member 24, so that the bracket 25 can slide relative to the insulating member 24 along the length direction b of the first wall.

[0131] Hold the bracket 25 in the pre-installation position, then connect the positive electrode tab of the electrode assembly 23 to the positive electrode terminal on the top cover 21 via the adapter, and connect the negative electrode tab of the electrode assembly 23 to the negative electrode terminal on the top cover 21 via the adapter.

[0132] After the connection is completed, slide the bracket 25 from the pre-installation position to the installation position, so that the buckle on the insulating component 24 is inserted into the corresponding slot of the bracket 25 along the length direction b of the first wall, thus completing the assembly connection between the bracket 25 and the insulating component 24.

[0133] Furthermore, the electrode assembly 23 is placed inside the housing 22, and the top cover 21 is sealed at the opening of the housing 22 to achieve the assembly of the battery cell 20.

[0134] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0135] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery cell, characterized in that, include: The outer shell has a first wall; An electrode assembly is disposed inside the housing, the electrode assembly including a main body and tabs extending from the main body; An insulating element is disposed inside the outer casing, along the thickness direction of the first wall, between the main body and the first wall; and A bracket is disposed between the insulating member and the main body along the thickness direction of the first wall, a portion of the electrode tab is disposed between the bracket and the insulating member, and the bracket is slidably connected to the insulating member along the length direction of the first wall.

2. The battery cell according to claim 1, characterized in that, One of the bracket and the insulating member is provided with a slide rail, and the other is provided with a slider. The slide rail and the slider slide in cooperation along the length direction of the first wall.

3. The battery cell according to claim 2, characterized in that, The slide rail includes a track body and a limiting part. The track body is fixed to one of the bracket and the insulating member. The limiting part extends outward from the track body along the width direction of the first wall. A limiting groove is formed on the insulating member and the other of the bracket. The limiting groove is located on opposite sides of the slider along the width direction of the first wall. The limiting groove is used to accommodate the limiting part and to limit the limiting part along the thickness direction of the first wall.

4. The battery cell according to claim 2, characterized in that, The slide rail is disposed on the insulating member, and the insulating member is further provided with a first connecting part; The slider extends along the length of the first wall and is disposed on the bracket, and the bracket is also provided with a second connecting part that is detachably connected to the first connecting part.

5. The battery cell according to claim 4, characterized in that, The bracket has a pre-installation position and an installation position. In the pre-installation position, the slide rail and the slider are slidably engaged, and the first connecting part and the second connecting part are separated. In the installation position, the slide rail and the slider are slidably engaged, and the first connecting part and the second connecting part are connected.

6. The battery cell according to claim 5, characterized in that, The first connecting part is configured as a buckle, the second connecting part is configured as a slot, and the opening of the slot is disposed away from the slider along the length direction of the first wall; wherein, the buckle is configured to be able to engage with the slot or disengage from the slot along the length direction of the first wall.

7. The battery cell according to claim 6, characterized in that, The buckle includes a first sub-buckle and a second sub-buckle spaced apart along the width direction of the first wall. Both the first sub-buckle and the second sub-buckle include a fixed end connected to the insulating component and a free end disposed away from the fixed end. When the bracket is in the installation position, the first sub-buckle and the second sub-buckle are located in the corresponding slots and are subjected to a contact force as the free ends approach each other.

8. The battery cell according to claim 7, characterized in that, The free ends of the first and second sub-buckles each have protrusions that face away from each other, and the groove wall of the slot extends inward to form a limiting step; When the bracket is in the installation position, the limiting step limits the protrusion along the thickness direction of the first wall.

9. The battery cell according to claim 4, characterized in that, The electrode includes a first electrode and a second electrode, and the support includes two electrodes respectively corresponding to the first electrode and the second electrode; Each of the brackets is provided with a corresponding slider and a second connecting part, and the second connecting parts of the two brackets are arranged opposite each other along the length direction of the first wall.

10. The battery cell according to claim 9, characterized in that, The insulating component is provided with two sets of slide rails and the first connecting part, and each set of slide rails and the first connecting part corresponds to the slider and the second connecting part on one of the brackets; The insulating component is provided with a transition piece receiving position, and each set of slide rails and the first connecting part are arranged on opposite sides of the corresponding transition piece receiving position along the length direction of the first wall.

11. The battery cell according to claim 1, characterized in that, The support has multiple flow holes extending through it along the thickness direction of the first wall.

12. A battery device, characterized in that, Includes the battery cell as described in any one of claims 1-11.

13. An electrical appliance, characterized in that, Includes the battery device as described in claim 12.

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